I would like to pick ya'll's brain here. I have a '79 J-10 w/360 engine. I have replaced the carb(new),fuel filters, fuel pump(twice), fuel lines, fuel pickup, and gas tank. Now, it will run until the fuel bowl is empty. I have checked for leaks, sucking air, etc. but can't solve this issue. Any ideas?
There are some who believe the return line must be in the 12 o'clock position on the fuel filter. This is not an absolute requirement for the truck to run. Mine is currently in the 10 o'clock position and I drive it around all of the time.
I always poo poo'd folks who insisted 12 o'clock is a 'must'. However, one thought on the subject does make sense to me. If you have vapor lock issues the 12 o'clock position might allow vaporized fuel to be pushed out the return line and help avoid issues. I have not tried this yet. I only have vapor lock issues once a year driving to/from Ouray (specifically Gallup to Ship Rock and back). So next year I will test this out.
82 Cherokee WT - SOA/SF/agr box/Borgeson ujoint steering shaft/401/performer/holley TA/HEI/BeCool/727/np208/d44(aussie)/amc20(ARB)/BFG 35X12.5/Corbeau Moab Seats/RCI 6point Harness,Hella Aux lights/tuffy console/killer32 slider bars/custom bumpers and roll bar/Alpine head unit/amps/speakers 2002 Liberty Limited Early edition - Basically stock
Ollie your right IMO , but it is a self bleed design. Its not mandatory, but it could be an issue. Picture it pointing up and return in the 6:00 position, you could could be getting no fuel at all. Its just another to check. Step one. Do a flow check before the filter,
"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
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I finally found the problem. There was bits of rubber in the needle valve area from past(before replacement) fuel line. Cleaned up and running like a champ. Also replaced all the fuel filters. Thanks for all the responses.